Malicious PDF — malware analysis report

Static analysis result for SHA-256 c09353e404065eda…

MALICIOUS

PDF

66.3 KB Created: 2020-12-31 21:48:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f1aba93d497d94b910097d6a3f756f45 SHA-1: 720ab6ae57200793e8dc14a40ab1b619ac77bdb2 SHA-256: c09353e404065edab871600474f06e8c5c62efe96d832e472c5a4d6d21a8d9a6
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://traffset.ru/123?utm_term=volvo+c70+manual', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a 'Volvo c70 manual'. No scripts were extracted, but the presence of an external URI and the high confidence threat detection indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffset.ru/123?utm_term=volvo+c70+manual PDF link annotation
    • https://cdn.sqhk.co/sovokeduseb/jbGieo8/shape_monster_craft_template.pdfIn PDF document text
    • https://cdn.sqhk.co/womibakok/2MYjjgi/47442785422.pdfIn PDF document text
    • https://cdn.sqhk.co/bivosozos/5hahche/does_valentus_coffee_increase_blood_pressure.pdfIn PDF document text
    • https://cdn.sqhk.co/susiwozobo/a1HNhg2/globe_at_home_prepaid_wifi_load_card.pdfIn PDF document text
    • https://cdn.sqhk.co/favejofu/7jiicjf/gupamat.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/WTm1P7Y/the_boy_in_the_box_book_review.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/252d1ad6-088c-4279-980a-85afca452e01/afscme_local_2620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e5477a4-e46f-4406-8bd4-6b578eb7a022/diablo_3_witch_hunter_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/61185571361.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/809edb69-5744-4d6a-a4d4-413626fcfc69/laplace_transform_of_tut-2.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/rsos_12_admission_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41ea7108-3248-4e9d-b834-222e431a69c4/sosaxeruvapibutira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/636142ec-c28f-460c-8008-6de4b187d25f/stair_runners_for_sale_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e04cc89f-71ba-4a31-8c60-eb42542bf316/engineering_guide_bfa_8._2.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c89d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC89D 4916 bytes
SHA-256: bc5986ab688182f7e88e520be7f32e0339473e35f3198f420dbf83a40bcc1a40
font_01_sfnt_off0000d956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD956 10360 bytes
SHA-256: 7cc6006dcd5b96cd1716bee64e11c628353ba2df386ddcecab7f90cfc4099f43

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